May 2022 1 9 Report
Zadanie 3. Oblicz wartość wyrażeń algebraicznych:

a) 2x + 6y - (3x + 9 + 4y) - Xy - (2x + 5y) = dla x = -2, y = 2

b) - (3x - 2y) + [-(- 5x + 4y) + 3xy] - (2x - 2y + xy) = dla x =3 , y = -2

c) -xy [ - (7x2 + 2y -3) - (-2y + 6 - 3x) + (-x)] - (-5x + 9) = dla x = -1, y = 2​

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